Table 1.
Evaluation of the removal of PHMB by using several solid-phase extraction columns.
| Solid-Phase Extraction Column | Concentration of Adsorbed PHMB Column | Removal of PHMB in from the Column/% |
|---|---|---|
| Sep-Pak Plus CN | 6.0 μM | 100 |
| Sep-Pak Plus C18 | 5.0 μM | 83 |
| Sep-Pak Plus C8 | 2.8 μM | 47 |
| OASIS HLB 1cc | 1.0 μM | 17 |
| Sep-Pak Plus PS 2 | 2.1 μM | 35 |
The peak height for 6.0 μM PHMB with the SPE columns was compared with that without those columns, and the concentration of adsorbed PHMB in the columns was measured from the calibration curve for PHMB without the columns.